Feed device for rolling-mills



(No Model.) 2 Sheets-Sheet 2:. G. M. SGHWAB.

FEED DEVICE FOR ROLLING MILLS. No. 431,626. 7 Patented July 8, 1890.

UNITED STATES PATENT OFFICE.

CHARLES M. SOHWAB, or NORTH BRADDOOK, PENNSYLVANIA.

'FEED DEVICE FOR ROLLING-MILLS. ii

SPECIFICATION forming part of Letters Patent No. 431,626, dated July 8, 1890.

Application filed March 7, 1890. Serial No. 342,971- (No model.)

To all whom it may concern.-

Be it' known that I, CHARLES M. SCHWAB, of North Braddock, in the county of Allegheny and State of Pennsylvania,.have invented a new and useful Improvement in Mill Appliances, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a plan viewshowing the endof a rolling-mill feed-table and my improved bloom-receiving device in connection therewith. Fig. 2 is a vertical section on the line 11 II of Fig. 1.

Like symbols of reference indicate like parts in each.

My invention is especially applicable to use in connection with the roughing-rolls or other rolls of a rollingmill, through Which the metal blooms are passed back and forth and reduced. In the use of such rolls the second metal bloom cannot be placed upon the feed-tables until the first bloom has been reduced by the rolls and has passed therefrom, and the time lost by the delay is sufficient to materially impede the work of the mill and to diminish the aggregate output. My invention is designed to overcome this evil; and to this end it consists in providing, in connection with the feed-table, an auxiliary receiving-table, on which the blooms may be laid by the charging crane or tongs, and from which they may be delivered to the mill feed-table by means of suitable feed-rollers or equivalent devices on the supportingtable.

My invention also consists in certain peculiar constructions and combinations of the parts, as hereinafter more fully set forth.

Referring to the drawings, 2 represents a portion of the usual feed-table, and 3 is an auxiliary receiving table set at the end thereof. This table is provided with feedrollers 4, which are connected at their ends by the usual gear-wheels 5. The rollers receive their rotation from a driving-shaft 6, which is actuated by a suitable engine 7 The frame of the table 3 is pivotally mounted on trunnions 8 and is supported by the piston 9 of a suitable hydraulic lifting-cylinder 10, (see Fig. 2,) .by means of which the table may be elevated, as shown by the dotted lines in Fig. 2. When the parts are constructed and arranged so that the axis of the shaft 6 is not coincident with the axis of the trunnions on which the table is pivoted, said shaft should be provided with coupling-boxes 11 to allow it a slight lateral play.

The operation of the apparatus is as follows: At any convenient time during the rolling of a bloom the next bloom to be rolled is brought by the crane or tongs over the table 3 and is deposited thereon. The table is then raised slightly by means of the lifting-cylinder, so as to free the bloom in the usual manner from the grasp of the tongs, and the tongs are then removed, leaving the bloom on the table. As soon as the metal piece which is being rolled enters the last pass of the rolls, the feed-rollers of the table3 may be started, so as to carry the next bloom upon the rollers of the feed-table, by which it is delivered to the rolls in the usual manner. All the delay which results from waiting until the bloom has been rolled before placing the next bloom by the tongs on the feed-table is thus avoided, and I am able to secure material advantages, which will be appreciated and understood by those skilled in the art.

My improved device may be modified in form and construction in many ways within the scope of my invention, as herein claimed. Such modifications will be suggested by the foregoing description to the skilled mechanic, and may be applied to suit the requirements of convenience resulting from the particular arrangement and construction of the mills to which my improvement is applied.

I claim 1. The combination, with a rolling-mill feedtable and the feed-rollers thereof, of an auxiliary receiving-table situated in proximity to the feed-table, and transferring mechanism on the receiving-table operative to transfer the metal from the receiving-table to the feedtable, substantially as and for the purposes described.

2. The combination, with a rolling-mill feedtable and the feed-rollers thereof, of an auxiliary receiving-table situated in proximity to the feed-table andhavingrotatory feed-rollers, and a driving-engine mechanically connected with the feed-rollersiand adapted to rotate them, substantially as and for the purposes described.

3.- The combination, with a rolling-mill'feed- 5 table and the feed-rollers thereof, of an auxiliary receiving-table situated in proximity to thefeed-tableandhaving rotatoryfeed-rollers,

and a driving-engine mechanically connected with the feed-rollers and adapted to rotate to them, and lifting mechanism connected with the receiving-table and adapted to lift the same, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 22d day of February, A. D. 1890. [5

CHARLES M. SCI-IWAB. Witnesses:

O. E. REINHARDT, LEW. F. HOLTZMAN. 

